CTermIter.h

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// -*- c++ -*-
//*****************************************************************************
//*****************************************************************************

// include basic definitions
#include "pbori_defs.h"

// include polybori functionals
#include "pbori_func.h"

// include polybori properties
#include "pbori_traits.h"


// include boost's interator facade
#include <boost/iterator/iterator_facade.hpp>

#include "BooleEnv.h"
#ifndef CTermIter_h_
#define CTermIter_h_

BEGIN_NAMESPACE_PBORI


template <class StackType, class TermGeneratorType>
class CTermIter: 
  public boost::iterator_facade<
  CTermIter<StackType, TermGeneratorType>,
  typename TermGeneratorType::value_type,
  typename StackType::iterator_category, 
  typename TermGeneratorType::result_type
  > {

public:

  typedef StackType stack_type;
  
  typedef typename stack_type::navigator navigator;

  typedef typename navigator::idx_type idx_type;

  typedef typename navigator::bool_type bool_type;

  typedef typename navigator::size_type size_type;

  typedef TermGeneratorType term_generator;


  typedef typename stack_type::const_iterator const_iterator;
  typedef typename stack_type::const_reverse_iterator 
  const_reverse_iterator;

  CTermIter(const CTermIter& rhs): 
    m_getTerm(rhs.m_getTerm), m_stack(rhs.m_stack) {
  }

  template <class MgrType>
  CTermIter(navigator navi, const MgrType& mgr): 
    m_getTerm(mgr), m_stack(navi, mgr) {
    m_stack.init(); 
  }

  CTermIter():  m_getTerm(), m_stack() {}

  ~CTermIter() {}

  void increment() {
    m_stack.increment();
  }

  bool_type equal (const CTermIter& rhs) const {
     return m_stack.equal(rhs.m_stack);
  }

  typename term_generator::result_type dereference() const {
    return m_getTerm(m_stack);
  }


  const_iterator begin() const { return m_stack.begin(); }
  const_iterator end() const { return m_stack.end(); }
  const_reverse_iterator rbegin() const { return m_stack.rbegin(); }
  const_reverse_iterator rend() const { return m_stack.rend(); }

  bool_type isOne() const { return m_stack.isOne(); }

  bool_type isZero() const { return m_stack.isZero(); }

  size_type deg() const { return m_stack.deg(); }

  idx_type firstIndex() const { 
    assert(!m_stack.empty()); 
    return *begin(); 
  }

  navigator navigation() const {
    return m_stack.navigation();
  }

protected:
  term_generator m_getTerm;

  stack_type m_stack;
};


END_NAMESPACE_PBORI

#endif

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